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Free Birth Chart Calculator

Enter your birth date and place to get your free birth chart: a full natal chart with every planet and its degree, the 12 houses, the aspects between them, and the readings that go with them, written from your whole astrology chart.

Free. No email, no account. Every reading open on this page.

When were you born?

Free · no email · birth time optional. Without it we leave out your Rising sign, your houses and the readings that need them, and tell you if your Moon changed sign that day.

What your free birth chart includes

The result on this page is the full chart, not a preview: exact degrees and every reading, and with a birth time your Rising sign and houses too.

  • · The wheel. Your natal chart as a wheel: the 12 signs, every planet at its degree, the house cusps and the major aspect lines.
  • · Every planet, with degrees. Sun through Pluto, the North Node and Chiron, each with its sign, its degree and minute (for example 24°11′), its house and a retrograde mark.
  • · 12 houses. All twelve house cusps, with the sign and degree on each.
  • · Aspects with orbs. The aspects between your planets, sorted from the tightest (most exact) outward. The major aspects show first; the rest are one tap away.
  • · Every reading. One for each planet in its sign and in its house, one for each main aspect, one for your chart ruler and one for any aspect pattern. All of them open on the page, nothing behind an account.
  • · A plain-text copy. One button copies your whole chart as text, so you can paste it into a note or an AI chat.

Only want your Sun, Moon and Rising? The Big 3 calculator gives you those three (plus Mercury, Venus and Mars) in a smaller result.

How this birth chart calculator works

A birth chart calculator (a natal chart calculator is the same thing) needs three things from you: a birth date, a birth place and, if you know it, a birth time. The place is turned into coordinates as you type. We then compute the planet positions with the Swiss Ephemeris, the same ephemeris professional chart software uses, to the arc-minute.

The chart uses the tropical zodiac (the one Western astrology uses) and Placidus houses. The time zone and daylight-saving offset are resolved from your birth place and date using the standard IANA time-zone database, so you only need the local clock time on your birth certificate. Nothing is tied to you or kept in a profile unless you make a free account and choose to save the chart.

Don't know your birth time?

Leave the time field blank. The calculator still shows the sign and degree of every planet, the North Node and Chiron, and all the aspects between them, computed for noon on your birth date. For most planets the sign is the same at any hour of that day.

Three things need a time: your Rising sign, your Midheaven and your 12 houses. All three move through the whole zodiac every 24 hours, so a guessed time gives a made-up answer. This calculator leaves them out instead. The Moon is the in-between case: it moves about half a degree an hour, so on about two days in five it changes sign. When that happens on your birthday, the result tells you the time of the change and names both signs.

Where to find your birth time: the long-form birth certificate (in the US, request the "vault" copy from the state), hospital records, a baby book, or a parent who remembers. If you find it later, come back and recalculate. A free account can add it to a saved chart.

Free chart vs Full Report

What the free chart, a free account and the Full Report each include
Included Free chart (this page) Free account Full Report ($19)
Wheel, planets, degrees, houses, aspectsYesYesYes
Readings for each planet, its house, the main aspects and any patternsYesYesYes
Saved chart, today's transits, and a personalized daily horoscope—Yes—
The whole chart read together: life themes, strengths and challenges, life purpose——Yes
Designed PDF you keep——Yes
Charts you can runUnlimited, not savedUnlimited; yours plus five others keptOne chart per report

So: the chart and its readings are free. An account keeps the chart and adds a daily horoscope for it. The $19 report reads the whole chart together in one PDF, and you can buy it without an account.

Create my free account

Saves this chart. Today's transits and a personalized daily horoscope for it. Google, Apple or email. No card.

Most accurate birth chart calculator? What to check

Accuracy starts with a reliable ephemeris, then depends on what a tool does with your birth details and time zone. Five things to check on any site, including this one:

  1. 1. Ephemeris source. Swiss Ephemeris or NASA JPL. If a site does not say, ask why. This one uses Swiss Ephemeris positions.
  2. 2. Historical time zones. The tool must know what the clocks did in your city in your birth year, not just today. A wrong hour moves the Ascendant by about 15 degrees.
  3. 3. The house system, named. If the site does not name it, you cannot compare houses across tools. This one says Placidus on the result.
  4. 4. Degrees to the minute. A tool that shows only whole degrees hides how close a planet sits to a sign boundary — 29°02′ and 29°58′ both print as 29°, and only the second sits close enough to the boundary to matter.
  5. 5. No silent noon Moon. The Moon covers half a degree an hour. A tool that silently assumes noon and never tells you is hiding the one placement that might be wrong. This one tells you.

The map behind the calculator

A birth chart (also called a natal chart) is a map of the sky at the minute you were born, drawn from the place you were born. It shows where the Sun, Moon and planets sat against the 12 signs of the zodiac, and, with a birth time, which of the 12 houses each one fell in and where the horizon cut the sky (your Rising sign).

Reading it means combining three layers: planet (what), sign (how) and house (where), and then the aspects that link planets together. If this is your first chart, start with our birth chart guide for beginners, then the step-by-step walkthrough of a chart.

Birth chart calculator FAQ

Do I need to give my email to get my birth chart here?

No. There is no email step and no account step. Enter your birth date, your birth place and, if you know it, your birth time. The full chart then shows on this page: the wheel, every planet with its degree, the 12 house cusps, the aspects, and the readings for each planet, house placement and main aspect. Make a free account only if you want to keep the chart. You'll also get today's transits for it and a personalized daily horoscope. That works with Google, Apple or an email address.

What can the calculator show without a birth time?

Without a birth time it still shows the sign and degree of every planet, the North Node and Chiron, plus every aspect between them, computed for noon on your birth date. It cannot show your Rising sign, your Midheaven or your 12 houses, or the readings that depend on them, because those need the exact minute and place. If the Moon changed sign on your birthday, the result says so and names both possible Moon signs.

Which house system does this calculator use, and can I change it?

It uses Placidus, a common default on the big chart sites, so your houses usually match what you see there. This page shows Placidus only. If a planet sits near a house cusp, a different system (Whole Sign, Koch, Equal) can move it one house over; the sign and degree of the planet do not change.

Why does my result say my Moon may have changed sign?

The Moon moves about 12 to 15 degrees a day, so on about two days in five it crosses from one sign into the next. If you left the birth time blank and your birthday was one of those days, the calculator cannot know which side of the change you were born on. So it shows the Moon for noon, tells you the time the Moon changed sign, and names the sign before and after. Add your birth time and the note goes away.

How accurate is this birth chart calculator?

The planet positions come from the Swiss Ephemeris, the same source professional chart software uses, and each is printed to the arc-minute (for example 24°11′). For the Sun and the outer planets that is far more precision than a reading needs. The sensitive parts are the Moon and the houses: the Moon moves about one arc-minute every two minutes of clock time, and the Ascendant moves about one degree every four minutes on average. So the accuracy of your chart depends far more on an exact birth time than on the maths.

Can I calculate a chart for someone else?

Yes. Enter their birth date, time and place the same way; there is no daily cap, and every reading is open for their chart too. A free account adds the part the calculator cannot do: it saves your chart and up to five others, shows today's transits for your chart, and writes a personalized daily horoscope for it. No card.

What does the Full Birth Chart Report add that the free chart doesn't?

The free chart reads each placement and aspect on its own: every planet in its sign and house, the main aspects, the chart ruler and any aspect patterns. The $19 Full Report puts those pieces together: your life themes, your strengths and challenges and your life purpose, with a chart overview, in a PDF you keep. You can buy it without an account.

Does the calculator handle historical time zones and daylight-saving time?

Yes. The time zone is resolved from your birth place and birth date, including the daylight-saving rules in force that year. So a summer birth in 1985 and a summer birth in 2005 in the same city each get that year's offset. You enter the local clock time from your birth certificate; the conversion to Universal Time happens on our side. For births before about 1970, or in places with wartime or Soviet-era clock changes, the historical record itself has gaps, so check the offset if your chart looks off. If your certificate itself is wrong, no calculator can correct for that.

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